employee has a financial interest knowingly to act as a principal, or as an agent for anyone other than LBJ, in connection with any:

1. judicial or other proceeding, application, request for a ruling, or other determination;

2. contract;

3. claim; or charge or controversy, in which the employee either participates personally and substantially through decision, approval, disapproval, recommendation, the rending of advice, investigation, or otherwise, or which is the subject of the employee’s official responsibility, where LBJ is a party or has a direct and substantial interest.